Numerical comparative study of a cohesive fracture model and linear elastic fracture model in rock bending test
This paper presents a comparative study between a mix-mode cohesive fracture model(CFM)and linear elastic fracture model(LEFM)in rock three-point bending test by using a hybrid continuumdiscrete element method(i.e.UDEC).The mix-mode CFM can well accommodate the post-peak curve in both tension and shear.In addition,it can look after the strength parameter degradation under inelastic displacement.The LEFM is a simplification of the CFM and all strength parameters in this model drops to zero once fracture starts to propagate.Comparative study shows that the mix-mode CFM has better capability of realistically reproducing the three-point bending test numerically in terms of load-displacement relationships.It also confirms that inelastic displacement during rock fracturing is one of the rock hallmarks that need to be accounted for.
Y.L.Gui Z.Y.Zhao J.Kodikara H.H.Bui Y.L.Gui S.Q.Yang G.F.Zhao
Nanyang Centre for Underground Space; School of Civil and Environmental Engineering, Nanyang Technol Department of Civil Engineering, Monash University, Clayton, VIC, Australia State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining a Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, Uni
国际会议
The 12th International Conference on Analysis of Discontinuous Deformation(第12届非连续变形分析国际大会)
武汉
英文
101-106
2015-10-16（万方平台首次上网日期，不代表论文的发表时间）